There is a hole at the top of iPhone 4/4s used as secondary mic for noise cancellation.
Obviously, it works when holding the handset to your ear, but does it work when you attach a wired headset or wireless? How about jawbone noise cancellation? Does it use both the iPhone and its own cancellation?
Wonder if i should avoid putting the iPhone in my pocket while using the headset or not.
Obviously, it works when holding the handset to your ear, but does it work when you attach a wired headset or wireless? How about jawbone noise cancellation? Does it use both the iPhone and its own cancellation?
Wonder if i should avoid putting the iPhone in my pocket while using the headset or not.